Sema family of Cotabato City

Muslimin Sema, Cotabato City mayor for three terms, later vice mayor and now BARMM labor minister, is married to former representative Bai Sandra Sema. His sons include Omar Yasser Sema, a BTA member, and Mohammad Abduljabbar Sema (Bai Sandra's son), elected barangay chairman in 2013; his nephew Romeo Sema is a BTA member and former labor minister.

6 documented relatives · 2 currently in public office · 6 documented relationships · Independent city of Cotabato City

In Cotabato City the family currently holds office through Muslimin “Mus” Gampong Sema (Mayor of Cotabato City for three consecutive terms from 1998; vice mayor 2010–2013; BARMM Minister of Labor and Employment since March 2022; MNLF chairman).

Open the interactive map →Tap any name to follow the connection and read the evidence behind it.

Who they are

Muslimin “Mus” Gampong Sema

Mayor of Cotabato City for three consecutive terms from 1998; vice mayor 2010–2013; BARMM Minister of Labor and Employment since March 2022; MNLF chairman

In office

Sources: Philstar · MNLF chairman now BARMM's labor minister (John Unson); PCIJ · The ties that bind; Rappler · BARMM polls: Who are competing in Cotabato, the regional center? (John Sitchon)

See Muslimin “Mus” Gampong Sema in the map →

Romeo Kabuntalan Sema

Bangsamoro Transition Authority member; BARMM Minister of Labor and Employment 2019–2022; lost the 2026 race for Cotabato City's 1st parliamentary district (Mahardika Party, 8,676 votes)

In office

Sources: Philstar · MNLF chairman now BARMM's labor minister (John Unson); Rappler · BARMM polls: Who are competing in Cotabato, the regional center? (John Sitchon)

See Romeo Kabuntalan Sema in the map →

Bai Sandra Sinsuat Ampatuan Sema

Representative, Maguindanao 1st district with Cotabato City 2010–2019. Lost the 2019 Cotabato City mayoral race, the 2025 Maguindanao del Norte House race (107,233 votes) and a 2026 Bangsamoro Parliament race in Maguindanao del Norte

Not in office

Sources: PCIJ · The ties that bind; Philstar · Cotabato City's Guiani-Sayadi wins fresh mandate; Rappler · BARMM polls: Maguindanao del Norte a key regional battleground; Politiko Mindanao · Rep. Bai Dimple Mastura secures re-election in Maguindanao del Norte

See Bai Sandra Sinsuat Ampatuan Sema in the map →

Omar Yasser C. Sema

Bangsamoro Transition Authority member (MP); Bangsamoro Party 1st nominee in the 2026 party-list vote (party won no seat)

Not in office

Sources: Bangsamoro Parliament · Biosketch of MP Omar Yasser C. Sema

See Omar Yasser C. Sema in the map →

Roonie Quesada Sinsuat Sr.

Former representative, 1st district of Maguindanao with Cotabato City (2019–2022)

Not in office

Sources: Politiko Mindanao · Sandra Sema visits Pulangi River, Brgy. Kinebeka

See Roonie Quesada Sinsuat Sr. in the map →

How they are related

• Muslimin “Mus” Gampong Sema and Bai Sandra Sinsuat Ampatuan Sema — SpousesMarriageEvidence: PCIJ · The ties that bind · “Bai Sandra's husband is Cotabato City vice mayor Muslimin Sema, who is also chairman of the Moro National Liberation Front (MNLF).”; Rappler · BARMM polls: Maguindanao del Norte a key regional battleground
• Muslimin “Mus” Gampong Sema and Romeo Kabuntalan Sema — Uncle → nephewBloodEvidence: Philstar · MNLF chairman now BARMM's labor minister · “Sema replaced his nephew, Romeo Sema, as BARMM's labor minister.”; Rappler · BARMM polls: Who are competing in Cotabato, the regional center? (John Sitchon)
• Muslimin “Mus” Gampong Sema and Omar Yasser C. Sema — Father → sonBloodEvidence: Bangsamoro Parliament · MP profile, Atty. Sema, Omar Yasser C. · “Father: Datu Muslimin G. Sema”
• Muslimin “Mus” Gampong Sema and Datu Mohammad Abduljabbar Sema — Father → sonBloodEvidence: Philstar · MNLF leader's son defeats veteran in Cotabato village polls · “Sema is son of former Cotabato City's vice-mayor, Muslimin, chairman of the largest and most politically active faction in the MNLF, which has actively been supporting the peace effort of President Benigno Aquino III with southern Moro communities.”
• Bai Sandra Sinsuat Ampatuan Sema and Datu Mohammad Abduljabbar Sema — Mother → sonBloodEvidence: VERA Files · (article on a criminal case; headline not reproduced) · “Sema is the son of Muslimin Sema, chairman of the largest group in the MNLF, and Rep. Bai Sandra Sema, congresswoman of the first district of Maguindanao.”; Philstar · MNLF leader's son defeats veteran in Cotabato village polls (John Unson)
• Roonie Quesada Sinsuat Sr. and Bai Sandra Sinsuat Ampatuan Sema — Uncle → nieceBloodEvidence: Politiko Mindanao · Sandra Sema visits Pulangi River, Brgy. Kinebeka · “From Mother Kabuntalan to Northern Kabuntalan with my uncle Congressman Datu Roonie Sinsuat.”

How this was researched

Researched September 2026 against Comelec 2025 results. Every relationship is quoted from a published source; people who share a surname without a published statement of kinship are left out. Family relationships do not imply wrongdoing or political agreement.

Documented family networks; not a complete government or barangay roster. National offices are distinct from local offices.

Sources

1. Philstar · MNLF chairman now BARMM's labor minister (John Unson) · 2022-03-12
2. PCIJ · The ties that bind · 2013-04-10
3. Rappler · BARMM polls: Who are competing in Cotabato, the regional center? (John Sitchon) · 2026-08-26
4. Philstar · Cotabato City's Guiani-Sayadi wins fresh mandate · 2019-05-15
5. Rappler · BARMM polls: Maguindanao del Norte a key regional battleground · 2026
6. Politiko Mindanao · Rep. Bai Dimple Mastura secures re-election in Maguindanao del Norte · 2025-05-15
7. Bangsamoro Parliament · Biosketch of MP Omar Yasser C. Sema · Read September 2026
8. Philstar · MNLF leader's son defeats veteran in Cotabato village polls (John Unson) · 2013-10-29
9. VERA Files · report on Datu Mohammad Abduljabbar Sema (Charmaine Deogracias) · 2017-01-13
10. Politiko Mindanao · Sandra Sema visits Pulangi River, Brgy. Kinebeka · 2022-02-04
11. PCIJ · The ties that bind · “Bai Sandra's husband is Cotabato City vice mayor Muslimin Sema, who is also chairman of the Moro National Liberation Front (MNLF).” · 2013-04-10
12. Philstar · MNLF chairman now BARMM's labor minister · “Sema replaced his nephew, Romeo Sema, as BARMM's labor minister.” · 2022-03-12
13. Bangsamoro Parliament · MP profile, Atty. Sema, Omar Yasser C. · “Father: Datu Muslimin G. Sema” · Read September 2026
14. Philstar · MNLF leader's son defeats veteran in Cotabato village polls · “Sema is son of former Cotabato City's vice-mayor, Muslimin, chairman of the largest and most politically active faction in the MNLF, which has actively been supporting the peace effort of President Benigno Aquino III with southern Moro communities.” · 2013-10-29
15. VERA Files · (article on a criminal case; headline not reproduced) · “Sema is the son of Muslimin Sema, chairman of the largest group in the MNLF, and Rep. Bai Sandra Sema, congresswoman of the first district of Maguindanao.” · 2017-01-13
16. Politiko Mindanao · Sandra Sema visits Pulangi River, Brgy. Kinebeka · “From Mother Kabuntalan to Northern Kabuntalan with my uncle Congressman Datu Roonie Sinsuat.” · 2022-02-04

The same family elsewhere

• Sema family of Maguindanao del Norte

Other families documented in Cotabato City

• Iqbal–AbasFormer Comelec chairman Sheriff Abas, elected to the Bangsamoro Parliament in 2026 for Cotabato City's 1st district, is the nephew of BARMM education minister and BTA member Mohagher Iqbal.

All families and officials in Cotabato City →